The five apps here will keep track of how much weight you've lost and how much you exercise and give you cash when you succeed. Some of them require you to bet on yourself by putting some money down, but if you smash through your goals, you'll earn your money right back, plus some extra dough to treat yourself to something nice (I have my eye on some leopard print sneakers). If you're ready to get moving, keep reading.

1Achievement

Sync other health apps with Achievement, and it will keep track of all the good things you're doing for your body, from getting more sleep to tracking your calories to hitting the gym. The more healthy actions you take, the more money Achievement pays out.

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2DietBet

While the DietBet app is free, you'll have to place a bet to get money out of it (naturally). Once you've downloaded the app, you can either create a fitness challenge for yourself or join an existing one. If you meet your weight-loss goal in the allotted requirements, you can win back the money you put down, plus more.

2 / 5

3Charity Miles

Maybe you don't necessarily want any extra money for yourself. In that case, download Charity Miles, create an account, and select your charity of choice. You'll earn money based on the amount of exercise you get, and that cash will go straight from the company's sponsorship pool (which your friends and family can contribute to!) to your chosen charity.

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4HealthyWage

Similar to DietBet, the HealthyWage app also requires you to invest a little money in yourself in order to join a fitness challenge. You have to participate in verified weigh-ins to prove you're putting in the work, and if you beat your goals, you get the cash. So simple.

4 / 5

5RunBet

If you're looking to amp up your workouts, try RunBet. You'll join a game for a certain amount of time and place your bet. If you meet your running goal by the time the game is up, you'll win. There's no cheating, either — the app relies on GPS in your phone to verify your activity.